Winding device for roll-film cameras.



P. DIETZ WINDING DEVICE FOR ROLL FILM CAMERAS.

APPLICATION FILED'NOV. II, 1915.

. l,2%3,2'?@w Patented Oct. 16, 1917.

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serting or removing a reel.

PAUL EI T 0E PI 'I A ELP IIA, PEN'NsY vANIA, AssIeNoE (T0 LEEIANoE MANU- FACTURING COMPANY, oE PHILADELPHIA, PEN SYLVANIA; A CORPORATION 01? PENNSYLVANIA.

WINDING DEVICE FOR ROLL-FILM CAMERAS.

Specification of Letters Patent,

Patented Oct. 1c, 1917.

Application filed November 11 1915. Serial No. 60,835.

To all whom it may concern:

Be it known that I, PAUL DIETZ, a citizen of the Empire of Germany, and a resident of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented .certain new and useful Improvements in ,VVinding Devices for Roll-Film Cameras, of which the following is a specification.

This invention has reference to improvements in roll-film cameras and pertains particularly to a winding device for winding up the exposed film portions.

As usual the film is unwound from one reel and after exposure is wound upon another reel. In order to facilitate the removal of the reel-with the film thereon and the insertion of a new reel the winding device comprises the usual key which, in former devices, has to be pulled out and held in that position during the operation of in- The present invention has for its special purpose to produce a winding device for roll-film cameras which is provided with means to keep thegripper mechanism in a permanent position when pulled out until it is released. These same means lock the whole gripper mechanism permanently in the reel and no outward pulling of the key will release any part of saidgripper mechanism orloosen the reel, unless intentionally released.

In former devices the key usually is attached to the shaft on which the spring operated device is mounted. In the new wind.- ing device the shaft has on its outer end a button or disk and the key is movablyattached to a sleeve which isrevoluble in one direction only to wind up the film. Only the gripper part which is tensioned by the spring need be moved out when a reel shall be inserted or removed. This is effected the button or small disk located at the outer end of the shaft. In order to keep the gripper mechanism out of engagement with the reel to easily take out one reel and put in another the winding key is provided with two stop or look teeth which engage the inner surface of the button or disk, in one instance. Thus the head of said button is kept in a permanent position together with. the entire spring operated gripper mechanism thereto attached. The release will be efiected as soon as a new reel has been placed into the camera by simply turning the pivotally' mounted key sidewise whereby its locking teeth will be disengaged from the inner surface of the button or disk and the spring operated gripper pin moved automatically back in the usual slots of the reel so that the spring actuated gripper bar permanently locks the reel. If now the key is turned back into an axial plane of the gripper pin then its teeth are located on the outer side of the button which insures the whole spring operated mechanism against any unlocking even if it were attempted to pull out the key or button.

In order to render the invention entirely clear reference is had to the accompanying drawing in which: v a

Figure 1 represents in face view a rollfilm camera partly broken away and embodying in desirable form the present im-.

,provement. V V Fig. 2 1llustrates in side elevation the lower portion ofthe roll-film camera with the key shown in dotted lines in the turned down position. I a

. Fig. 3 shows onan enlarged scale in longitudinal sectional viewthe winding mechanism. p

Fig. 4 is a detail view of the ratchet and gripper'bar mechanism, partly broken away.

Fig-5 isa perspective View of the gripperbar. e

' Similar characters of reference denote like parts in all'the figures.

1 In the' drawing a represents a roll-film camera having sides 6, 0. On'the inner portion of the side I) a spring operated reel holding device cl is provided which is of' usual construction. The reel 6 is shown in dotted lines in Fig. 1. On the side 0 of the camera an opening is made in which a sleeve or bearing 7 is mounted which acts inside "of the camera as a ratchet hub f on which a ratchet wheel 9 is mounted surrounded by a casing h which rests against the inner portion of the wall 0 of the camera. The casing has an inner cover 7L and the ratchet is provided with a spring pawl g as usual.

Surrounding the sleeve 7 there is a collar and bearing 2' with front cover i and a reinforcing frame j is mounted upon the inner portion of the collar z' which frame rests against the side 0 of the camera. Through a central opening in the cover 11 the shaft circular portion m and a gripper plate or inner key n mounted therein. The grlpper teeth 8, 8 rest against the inner'surface'of la passes which supports the helical spring Z. On the inner end of the shaft is there is the gripper bar arrangement comprlsing a plate or inner key has a reduced inner portion-n n engaging the slots 0, 0 of the sleeve 7. Thus the key is engaged andthe entire reel may be moved because the inner key or gripperplate n is adapted to enter the slot in the film-roll of the reel and thereby lock the reel in position allowing of it rotation.

The shaft 71; of the spring operated 'gripper mechanism is provided on its outer end with a disk or button p by means of which the spring operated gripper mechanism may be pulled out. In order to lock the said mechanism in a permanent position When pulled out the key 'is of novel construction. The key is pivotally secured to the collar or bearingz' by means of the screws 7', r so that it may be turned sidewiseand restin a plane parallel to the side wall of the camera casing. The'inner body portion of the key is provided with'two lock teeth s, s If now the key is laid so to say fiat against the Wall offthe casing, the button 20 pulled out and the key then moved up in an axial plane of the shaft the stop or lock the button and hold'the same in a permanent position with the entire spring operated mechanism and gripper bar arrangement attached torthe gripper shaft 011' which the button is located.

In this manner the gripper mechanism is permanently out of engagement with the reel which then may be taken out and renewed. When a new reel with film has been inserted the key g is turned back flat against the wall of thecamera casing whereupon the spring forces the gripper mechanism automaticallyin and the inner key of the gripper bar arrangement lodges in the slot of the reel locking same permanently until released. Now the key is turned back into an axialplane of the gripper shaft but the lock teeth ofthe key are now located outside of the button and Witn esses prevent any operation of the same insuring thus said mechanism against any unlocking as long as the key is in thedescicibediposition; r

V I claim as my invention:

1. A winding device for roll-film cameras comprising a spool engaging V shaft and mechanism for holding the shaft out of engagement with the spool, supporting means for said winding dev1ce mounted on one side wall ofthe camera-casing, saidholdside wall of the camera casing, said holdingmechanism comprising a'button on the outer end ofsaid shaft,'a flat key with end flanges. pivotally secured upon 'the outer portion ofsald supportingmeans and hav ing locking, teeth on 1ts inner body portion adapted to engage the inner surface of the button when the shaft has beenpulled out. p 3. A winding device for roll-film cameras comprising a spool engaging shaft, a button at the outer end of the shaft for 'pulling out the-same, and a keypivotally mounted Jindependentfrom the button, and having lock teeth on its inner body portion said key being adapted to be laid flat against the side ofthe cameracasing permitting to pull out the button with; mechanism thereon and returned into its initial position so thatthe teethengage the inner surface of the button, holding theshaft in the drawn out position until released.

3 Signed at Philadelphia, Pa.,this'9th day ofNovember, 1915. f

- PAUL 'DIETZ.

XVAL/TERVEI. COTTON, 7 JOHN MARX,

Gopiesof this patent may be obtained for five cents each, by addressing theVGoinmiss ioner f P t he I Washington, I). 0. v V 

